CVE-2026-73151
Description
A flaw was found in svxlink's remotetrx NetUplink component. An unvalidated audio length field enables an out-of-bounds read, and when AUTH_KEY is not set, transceiver control functions are exposed to unauthenticated remote access. This allows unauthorized control of radio hardware connected to the svxlink system.
Statement
svxlink is not shipped in any Red Hat Enterprise product. It is available in Fedora as a community-maintained package.
Mitigation
Update svxlink to version 26.05.1 or later.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
An attacker could get secret values such as cryptographic keys, PII, memory addresses, or other information that could be used in additional attacks.
Confidentiality
Technical Impact: Bypass Protection Mechanism
Out-of-bounds memory could contain memory addresses or other information that can be used to bypass ASLR and other protection mechanisms in order to improve the reliability of exploiting a separate weakness for code execution.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker could cause a segmentation fault or crash by causing memory to be read outside of the bounds of the buffer. This is especially likely when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string.
Other
Technical Impact: Varies by Context
The read operation could produce other undefined or unexpected results.
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